Not enough contacts on that switch to both rearrange the batteries and cycle power on two amplifiers. Tried it several times and ended up leaving one of the amplifiers on. It had to be the 24v amplifier because of voltage tolerance.

Quote:

Originally Posted by Kasper Jack

Here the 12v amp runs off the battery to the left and the 24v amp runs off both batteries in series. But i would like to run the 12v amp off both batteries in parallel, is this possible?

The switch can be arranged so that only one amplifier is on.
Unfortunately, the small signal line has ALSO connected the ground of the RCA jacks together. oops! Now you have a ground loop. So, set both amplifiers with the RCA jacks (input edges of the boards) touching and run a unified ground at that spot. When there is only 1 ground, then there's no ground loop.

For for charging, the 24v amp (maxes at 40v) can withstand the charger, but the 12v amp (max 14) cannot. So, have your switch simultaneously turn on both the charger and 24v amp simultaneously, and likewise the charger is disconnected if the 12v amp is on. The arrangement shown uses a ~24v CCS charger for charging both batteries simultaneously.

The switch can be arranged so that only one amplifier is on.
Unfortunately, the small signal line has ALSO connected the ground of the RCA jacks together. oops! Now you have a ground loop. So, set both amplifiers with the RCA jacks (input edges of the boards) touching and run a unified ground at that spot. When there is only 1 ground, then there's no ground loop.

For for charging, the 24v amp (maxes at 40v) can withstand the charger, but the 12v amp (max 14) cannot. So, have your switch simultaneously turn on both the charger and 24v amp simultaneously, and likewise the charger is disconnected if the 12v amp is on. The arrangement shown uses a ~24v CCS charger for charging both batteries simultaneously.

Can you see this photo?

I dont quite understand what your saying about the RCA jacks?

The batteries will be easily removable and charged externally, so that shouldn't be a problem. Then it can play 12v music at Roskilde festival, while i charge the other battery at my work
But cool idea, might use it, thanks

I have already bought 2 amps, would like to see if i can get something out of them, before investing in a 3rd...

You cannot have 2 amps connected to the speakers at the same time. Period.

Remember there's output filters in these amps, these will affect the impedance and frequency response of the system.

Ok...
I remember reading about someone building a boominator with 2 amps earlier in this thread. If i recall correctly it was someone from Camp Fri Ost, but i may be mistaken. Maybe i should just stick to the 12v amp, and use the 24v for a future project.

Quote:

Originally Posted by danielwritesbac

Aha! Just buy a 12v battery and attach it to the 12v amp.

Attach your 24v battery to the 24v amp.

Nice out of the box idea, but it will cost me a battery more, and half the battery life in 12v mode. :/

Ok...
I remember reading about someone building a boominator with 2 amps earlier in this thread. If i recall correctly it was someone from Camp Fri Ost, but i may be mistaken. Maybe i should just stick to the 12v amp, and use the 24v for a future project.

Yes. They have 2 different amps. And they change between them. They cannot be connected at the same time.